Universal coupling.



` the following 4scri tion..

.UMTEDSTATES PATENT oFFIoE.,-

HER-MAN DOCK; OF WYNCOTE, PENNSYLVANIA, ASSIGNOR TO DOCK GASENGINE COMPANY,

or' New Yoan, 'a

UNIVERSAL courante;

To all whom 'it may concefrnf Be it' known that I, HERMAN DOCK, a.h citien of'the 4United States, residing at Wyncote, Montgomery county,-

nseful Ir n provements in Universal Couplings, ofwhich is a full-,'clyear, and exact de- Speciication o! Letters-Patient.:

Pennsylvania,y .have invented certain, new and T iis invention relatestoimprovements in.

cou plings vidmg a universalcoupling whereby two shafts mayY be connected at their ends whether said shafts are out 'of-line or offset, whereby power may," be economically and effectivelytransmitted from one to the other cramping or. binding without undue friction, at the coupling' or in said shafts.

In 'the drawings, Figure 1 lis a plan view of this invention. Fig. 2 is -aside the bearing boxes for elevation of the parts as theyappear in Figi; Fig. auw

l'an view, the parts being shown 'in' a. di 'erent' vostion that shown inJ Fig. '1, and t e shafts being turned at an angle of' 9()G from that shown in Fig. 1. Fig. 4l is a side elevation of the 'parts as shown in Fig. 3. Fig. 5 'is a side view 'of one section of the universalcoupling shown in .the preceding figures. Fig. 6 is an end view thereof. Fig. Y is a view of abearing box. Fig. 8- is an end view ofthe other 'section 'of the universal"'coupling shown in Figsl to 4. Fig. 9 is a front or end eleva'- tion of a modification of the part shown 1n Fig.

' parts shown in ,Fig 9.

1 may represent a .drivingshaft having suitable bearing boxes 1a 1%. 2 may represent a. driven shaft having suitable bearing boxes 2*'21". A# shown'in Fig.y 1, these shafts are not only ont of line, but the adjacent or connected ends are actually ofset,'thus representing a most extreme condition and one .that the ordinary universal joint will not. care for. Brepresents what may be termed a head carried by the driving shaft 1v and provided at' its front side, with zu transverse guide-way. t In the `forn'rshown 1n,l igs. .1 to 8, the raide-way 1s continuons, mthat it extends fiom vedge toedge. of the head 3. The guidefway is indicated at 4, in Fig. 8, andthe oppositey sides thereof are suitably concaved or otherwise Jhapedto" receive the driven member. l 5 is a heaving box on driven fr oin- Fig..10 is a vertical section 4o f the 'ille-position in the guide-way from that indicated '1n v 'Patented oct. 13, 1908. Appnmmnmea october 11,1991. smal nu. avalan.A

lshaft 2.' The coupler section 6 Willbe termed herein ,a yoke.' In the particular form shown, this yoke is U-shaped an'di's held at its middle part in the box 5, suitable bearing. shoulders 6* y6 being provided in'tliis orm to 'prevent' sideplay. 6 project -into the guide-way 4 ofthel he '.3

and'slidablev and rotatable on the ends' of the yoke are lanti-friction end-bearingdevices Gb (55. The'devi'ces are preferably. ball-like bodies, whiclita-ke such a bearingbetween the. walls `ofthe guide-way 4 'in the ,head 3 that they may rotate therein. Back of the guide-l way, inFigs. 1 and 4, may be a 'clearance opening 7,' for the'ends ofthe yoke 6;- .Of course'the particular shape of these various parts may bev modified at will, butthe ar- .rangerr'ient shown representsone practical and effective form. N

8 a connectorlfor the ends of tliefyokef. The size of said connector may besuch' as to add strength'to the yoke member same 'may be keyed thereto as indicatedat S5 8", Fig.' (i. 4.

9- is a removable block in the box4 ewhere by the yoke G may box.v This removable 'block 9 Saffords one 'means of"} er'mitting saidparts to vbe as sembled. 10-10 are screwsv block in place. Other means may,of course, be employed for permitting the' assembling i of said' partsA and for'holding them in their assembled position. p

Operation: In Figs. 1,to 4 `the shafts 1 and 2 are represented as being' not -on-lyfout of line, but their ends are likewise offset to' the sameextent inall 'of said views, and theseviews vshow the position that'the partsof the coupling take when said-shafts have been lturned ap roximately- 90. Referring first to Fig. 1, tlie'yoke is atan anglevrelativelyv to theaxis of shaft 2, whereas the ball endsG will-stand at approximately the midof thehead 3. This is seen by reference to Fig. S2, which is a view of Fig. 1 taken from' the side.' The other extreme positionof the couplin :is inf dicated in Figs. 3 and 4, in whichjs'lgi. and 2 have been turned to an 'angle 90 Figs.'1 and 2.a ,'-In the position shown 41n Fig. 3, it now appear-s thatthe yoke and the vball ends have :ip-' proached the limit of their excursion at one.- end of the guide-way in this positionthe yoke is in the head 3, and in the same plane Theends of the okebe removed-from said forholdiiig said aft-s 1- as the axis of the driven shaft 2, as will be seen from Fig. 4.' This extreme position ma be taken y reason of thefact that the bal ends 6b have not onl a rollingmovement in the guide-way 4 but also .a sliding movement on the yoke ends 6, as will be ap. parent from Fig. 3.

Since it appears that the sections of the cou ling may take these extreme positions, an since the yoke 6 will turn freely in the box 5, it follows that power applied to shaft 1 will b e transmitted through the yoke 6 to the driven shaft-2 witha minimum amount of friction, as compared, of course, with any connection .of the universal type, which re qnires a suitable -eouplingto permitthe ends -of two shafts which are out of line, to be connected so. that the rotary movement of one may transmitted to the other. This continuously ing shaft 13.4 as

invention differs from the same eiliciency.

the ordinary universal joint of the well known inibal-ring and' modifications thei'eo in that not on y may the shafts be arranged out of line but their ends may. be offset, which is an extreme condition unattainable in the aforesaid ordinary type of universal connections. As an illustration of one ofthe man modifications which may be availed'of, re erence ismade to Figs. 9 and 10, in which instead of having the guide passage extend across the vhead, said guide passage is interi-u ted. In 'these views 13 represents 'the hea suitablyfixedu on driv- 14e-14 represent t e guide passages, which enter the head from opposite sid and extend far enough in to give the desired lateral pla to the ball-like ends of the yoke 6. In t is modification, the two sides of the head .13 are connected adjacent 40 to a central hub, so that the head is, in effect, of disk form. The other section of the universal coupling may be applied without modification to that form of head 13 shown in Figs. 9- and 10. While perhaps the same range -of movement may not be attained in the particular form shown in Figs. 9 and 10 that is possible in the construction shown in Figs. 1 to 8, nevertheless a sufficient range of movement is afforded to provide a universal connection of the same type and of It is, of course, immaterial which shaft 1 or2 is employed as the driving shaft, since powier may be applied through either equally wel What I claim is:

1. lIn a universal couplin two shaft ends, two sections,- one of said .sections beingv hinged to one shaft end the other section having a transverse guide-way to receive the first-mentioned section to permit it to move laterally relatively thereto, and an anti-friction device copei'atively connecting both of said sections.

2. In a universal eou'plin two shaft ends, two sections, one of sai sections being hinged' to -one shaft end and carrying an anti-friction ball-like member, the other section being secured to the other shaft end and having a groove therein to receive said antifriction Vmember between the twov Walls of said groove whereby a relative lateral move.- ment of said ball-like member and the walls of-said groove may be effected as the shaft ends are rotated'. '3. In a universal coupling, two shaft ends, two sections, one of said sections beinghinged to one shaft end, the other section having a transverse guide-way'to receive the first-mentioned section to permit it to move.

4laterally' thereof, and two antiffrietion devices rotatably and slidably mounted onthe first-mentioned section and being operatively connected at all times Vwith the second-inentioned section.

` 4.` In a universal coupling, two shaft ends, a two-arm member hinged to one shaft end, ahead secured to the other shaft'end having a transverse guide-way therein, the two ends of the two-arm member having a bearing in said lide-way.

5. n auniversalcoupling for two shafts, a two-arm member hinged toone'shaft end,

a head secured to the other shaft end and.

having a transverse guide-way therein, the

two ends of the two-arm member having a bearing in said guide-wa said bearing iiicluding anti-friction bal s arranged to lrotate'and slide on said ends. 6. In a universal coupling foishafts, two sections, one of said sections having a trans.

ico.

verse guide-Way, two anti-friction end bearsaid bearings bein' located in said4 guide? way and lhaving a caring against the walls thereof.

HERMAN DOCK. Witnesses:

ERNEST L. CR'ANDALL, 'ALBERT S. Woon'.

ings carried by the other section, portions of 

